Toilet seat riser



FIG. 1 is top isometric view of the front of the toilet seat riser, in accordance with the design;

FIG. 2 is bottom isometric view of the rear of the toilet seat riser of FIG. 1;

FIG. 3 is right side elevation view of the toilet seat riser of FIG. 1;

FIG. 4 is a rear elevation view of the toilet seat riser of FIG. 1;

FIG. 5 is a front elevation view of the toilet seat riser of FIG. 1; and,

FIG. 6 is a top plan view of the toilet seat riser of FIG. 1. 

CLAIM The ornamental design for a toilet seat riser, as shown and described. 